If the atomic weight of magnesium is 24.3 g/mol, calculate how many magnesium atoms does 5 g represent?       1.24 x 10^23 molecules   1.76 x 10^23 molecules   3.44 x 10^23 molecules   2.76 x 10^23 molecules

Q: The combustion of pentane produces heat according to the equation   C5H12(l) + 8O2(g) ® 5CO2(g) +…

A: ★ Answer : 156.71 grams CO2 are produced.

Q: Which of the following is a major product of the Hofmann degradation shown in the box? LN(CH3)2 CH3I…

A: The reaction proceeds by the Hofmann elimination reaction mechanism. In the Hofmann elimination (or…

Q: chanical ctrical emical lar

A: In ocean high velocity waves collide in the form of tide which produce kinetic energy.

Q: How many grams of Ca metal are produced by the electrolysis of molten CaBr2 using a current of 30.0…

A: Given,  Current (I) = 30.0 amp Time (t) = 8.0 hours = 8.0 × 60 × 60 sec = 28800 sec Mass (in grams)…

Q: Which of the following is NOT true? Select one: a.SEM is used to analyze the chemical composition,…

A: SEM- scanning electron microscope is technique which is used to analyse the topography (means how…

Q: Choose the correct cell potential. O Ecell = - 0.12 V O Ecell = + 0.09 V O Ecell = + 0.12 V %3D O…

A:

Q: = 85% and H2 = 15%. Calculate the weight of air for complete combustion of 100 kg of petrol. What is…

A:

Q: why these chemical structures are Synthetic.

A: The structure which shows the atoms of the molecule, their position, bonding with each other and the…

Q: Write the dissolution reaction for ammonium sulfide in water. Be sure to specify the state of each…

A: The solubility of an ionic compound can be predicted on the basis of solubility rules.

Q: Draw a structural formula for the substitution product of the reaction shown below. F + - || Na'…

A:

Q: Pencil "lead" is almost pure graphite. Graphite is the stable elemental form of carbon at 25°C and 1…

A:

Q: Question 2. (a) Is the lithium ion battery secondary battery? Describe the discharging process in…

A: #2(a): Secondary batteries are rechargeable batteries and are able to recharge themselves and store…

Q: Give 5 differences of configurational isomers and geometrical isomers in table form

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Q: What temperature will be needed to heat treat copper such that the concentration of vacancies per…

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Q: Complete an ICE box using the appropriate concentration values. e. f. Determine the pH at the…

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Q: A chemist determines by measurements that 0.0800 moles of fluorine gas participate in a chemical…

A:

Q: Please help with this work. Derive the free-ion term (show the steps) and (b) find (ONLY) the ground…

A: This is multi part questions and as per answering guidelines I can only answer first 3 questions if…

Q: Calculate the dipole moment of the carbon–hydrogen single bond

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Q: Describe the portion of the molecule that makes them that functional group. Q1. Using the functional…

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Q: 1) For each of the following compounds, decide whether the compound's solubility in aqueous solution…

A: As per the guideline, since you have asked multiple questions, we have solved the first question for…

Q: Write balanced half-reactions for the following redox reaction: 3 Cl,(0)+2 Cr*(aq)+14 OH (aq) → 6 C1…

A: Here we are required to balance the half cell reaction for the given redox reaction.

Q: The nitration of the 2-amine toluene is able to occurs with only nitric acid. Interestingly it…

A:

Q: NaOCH3 HOCH3

A:

Q: What arenium intermediates are formed in the ortho- and meta-substituted products of the following…

A: Given reaction is :

Q: For each of the following compounds, decide whether the compound's solubility in aqueous solution…

A:

Q: Why would CCSD and FCI give the same PES? Would you expect this result if the same calculations were…

A: We have fund out the answer.

Q: A chemist determines by measurements that 0.0850 moles of iodine solid participate in a chemical…

A: • The values provided in the question are:-     i) Number of moles of iodine (I) solid participate…

Q: 4. det erMIne ene producu show Stepwise mechanism ant

A: In this question we have to tell the product of the reaction and mechanism.

Q: 13. For the following reaction H2(9 + Cl2(g) → 2 HC (g) (3) AH kJ/mol 0. 223.0 -92.3 130.6 186.8 a.…

A: Solution -

Q: whats this molecue called

A:

Q: ed under standard conditions, when the reaction is st ate the non-standard Free Energy change (AG)…

A: Given, □G°rxn = 2×(-16.6) = -33.2 kJ/mol Q = (1.5)2/(1.0)(0.06)3 = 625 □G = □G° + RT×ln(Q)

Q: The resulting retention volumes for a series of polystyrene standards Molar mass (g/mol) Retention…

A: Given: Molar mass (g/mol) log(Mw) Retention volume (mL) 640000 5.80618 12.14 483000 5.683947…

Q: In each row check off the boxes that apply to the highlighted reactant. The highlighted reactant…

A: Lewis acid is a species which accepts electrons and Lewis base is a species which donate electrons…

Q: 2262 Put all answers 1 Which one of the following compounds is the strongest acid? -HO- сон CH CI-…

A: Carboxylic acids are more acidic than alcohols due to conjugate base stability            R-COOH…

Q: Based only on the half-reactions in table below, determine what spontaneous reaction will occur if…

A: For the spontaneous reaction to occur when two half cells are connected , the cell potential must be…

Q: Devise a synthesis of the following compounds from benzene. Assume ortho- and para-isomers can be…

A: Here we are required to synthesis the following compound from benzene

Q: NaOH, H20 PhCO- PHCO + heat C A II. Two of the following mechanisms are wrong, indicate which ones.…

A: A. β hydrogens are less acidic than α protons. Therefore base will pick the hydrogen from α carbon.…

Q: Propose reagents and conditions for the following multistep reaction: Br CH3 CH2 CH2 CH CH2 H2C. CH…

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Q: If the titrant needed in the titration is 0.2500 N sulfuric acid, how will you prepare a 1000 ml…

A: Given, Normality=0.2500N and Volume=1000ml

Q: Which monosaccharides form: a) lactose b) maltose c) sucrose

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Q: Hydrogen chloride and oxygen react to form water and chlorine, like this: 4 HCl(g)+O,(9) → 2…

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Q: Which of the following is a strong acid? O acetic acid O hydrochloric acid O hydrofluoric acid…

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Q: A chemist measures the amount of nitrogen gas produced during an experiment. He finds that 5.72 g of…

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Q: Show the chemical equation for the hydrolysis of sucrose.

A: Hydrolysis means breaking of bonds using water. Sucrose has chemical formula C6H22O11.

Q: A chemist determines by measurements that 0.0850 moles of iodine solid participate in a chemical…

A: Number of moles of substance = Amount of substance in g/ Molar mass of substance in g/mole

Q: For a particular reaction at 25.0°C, ΔG°= 81.7 kJ and ΔH° = 76.3 kJ. What is ΔS° for this reaction,…

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Q: Explain the difference ber- a. using the Fischer form

A:

Q: Calculate the molar solublity of BaCro4 (Ksp = 2.10x10-10) in pure water. %3D 2.10e-10 M Use the…

A:

Q: A human skeleton excavated from an ancient burial ground is found to contain only 0.27% as much…

A: Given,  A human skeleton excavated from an ancient burial ground is found to contain only 0.27% as…

Q: A chemist measures the amount of hydrogen gas produced during an experiment. He finds that 575. g of…

A: Given-> Weight of H2 gas = 575 gm

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.